Structure 53 1334 · Los Angeles County, CA

State Route 91 over Norwalk BLVD

Carries State Route 91 over Norwalk BLVD, 07-la-091-r18.67-crts.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT133 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

133 ft end to end. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built196858 years old
Length133.2 ft40.6 m
Daily traffic262,000counted 2019
Last inspectedAugust 2023every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-091-r18.67-crts
CarriesState Route 91
CrossesNorwalk BLVD
Coordinates33.87627, -118.07285

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length133.2 ft (40.6 m)
Max Span133.2 ft (40.6 m)
Deck Width167.0 ft (50.9 m)
Deck Area2066.5 sq m
Main Spans1
Year Built1968

Traffic

Avg Daily Traffic262,000 (2019)
Truck Traffic8%
Lanes On Bridge12
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 1334

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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